Kôhaku (Miyake Seiichi) was the son of the Shijô painter Miyake Gokyô (1864-1919). He was noted as being a much-admired practitioner of jimbutsu-ga or human images, and a wonderful draftsman. He graduated from the Kyoto Municipal School of Fine Arts and Crafts, where he studied under Yamamoto Shunkyô (1871-1933). Kôhaku was a frequent exhibitor with the Bunten, the Teiten and the Nitten.